“You see her with the curling iron, and she touches it to make sure that it’s hot,” Persaud told WABC. “And then when he jumps because it burns him, she continues to touch his foot again and then goes for his hand.”

Investigators say Nxumalo admitted to becoming frustrated with the boy after ‘a long week.’

“It was a long week and I was tired. The child wouldn’t listen, so I wanted to discipline him with the iron, so I burned him with it,” she reportedly told investigators.

21-year-old Nosipho Nxumalo was arrested Thursday on two counts of assault, criminal possession of a weapon and endangering the welfare of a child.